How do I charge my Fitbit device?

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We recommend plugging your charging cable into a USB port on your computer or other low-energy device. If necessary, you can use a UL-certified USB wall charger. Don't use a USB hub or battery pack to charge, and only use the charging cable that came with your device.

Your Fitbit Ace, Fitbit Alta, or Fitbit Alta HR comes equipped with a rechargeable lithium-polymer battery. Charging fully may take one to two hours.

Charging Instructions

To charge your tracker:

Plug the charging cable into the USB port on your computer or a UL-certified USB wall charger.

Clip the other end of the charging cable to the port on the back of the tracker. The pins on the charging cable must lock securely with the port. You’ll know the connection is secure when the tracker vibrates and you see a battery icon on your tracker’s display. The battery icon disappears after three seconds.

While the tracker charges, you can tap it to check the battery level. A fully charged tracker shows a solid battery icon.

To see these steps in action, watch the following video (English only).

Your Fitbit Blaze comes equipped with a rechargeable lithium-polymer battery. If your battery is low, charging fully may take one to two hours.

Charging Instructions

To charge your Blaze:

Plug the charging cable into the USB port on your computer.

Remove the tracker from the wristband. To do so, push the screen gently so that it detaches from the frame.

Put the tracker inside the charging cradle with the screen facing towards you and the four gold prongs aligned.

Close the cradle cover. A large battery icon appears temporarily on the display to let you know that charging has started.

While your tracker is charging, a small battery icon in the top left corner while charging so you can check progress. A large green battery icon means the battery is full.

To see these steps in action, watch the following video (English only).

Monitoring battery level

The battery icon in the top left corner of your Blaze screen represents remaining battery life as of the last sync. You can also find this icon on the Fitbit dashboard.

If you want to receive a push notification or email when your battery is low, update your Notification settings on fitbit.com. For instructions see How do I update my Fitbit settings?

Your Fitbit Charge comes equipped with a rechargeable lithium-polymer battery. Charging completely takes between an hour and two hours.

To charge your tracker, plug the charging cable into the USB port on your computer and plug the other end into the port on the back of the Charge. A battery icon on the display will show the charging progress.

Charging Instructions

Plug the charging cable into the USB port on your computer or a UL-certified USB wall charger.

Clip the other end of the charging cable to the port on the back of the tracker. The pins on the charging cable must lock securely with the port. ​

Make sure the button on your tracker is aligned with the button opening on the charging cable. You’ll know the connection is secure when the tracker vibrates and you see a battery icon on your tracker’s display.

While the tracker charges, you can tap it to check the battery level.

Your Fitbit Charge HR comes equipped with a rechargeable lithium-polymer battery. Charging completely takes between an hour and two hours

To charge your Charge HR, plug the charging cable into the USB port on your computer and plug the other end into the port on the back of the Charge HR. A battery icon on the display will show the charging progress.

Fitbit Flex comes equipped with a rechargeable battery. Charging fully may take up to 3 hours.

Remove the pebble from the wristband:

Line up the pebble with the charging cable, putting the rounded end of the tracker into the charging cable at a slight angle. Use your thumb to push the pebble in and down into the charging cable until you hear a click.

Insert the charging cable into the USB port on your computer. Your Flex's LED indicator lights will pulse to show the battery level every few seconds. Each solid indicator light represents progress towards the total charge. When it's charged, all 5 indicator lights will blink.

Remove the pebble from the charging cable and put it back in the wristband.

Fitbit Flex 2 comes equipped with a rechargeable battery. Charging fully takes about two to three hours.

Charging Instructions

To charge Flex 2:

Plug the charging cable into the USB port on your computer or a UL-certified USB wall charger.

Press the pebble into the compartment on the charging cable The pins on the charging cable must align with the corresponding pins on the back of the pebble and lock securely in place. You’ll know the connection is secure when the pebble vibrates and you see the indicator lights blinking.

While Flex 2 charges, each white light represents 25% of the maximum charge. When fully charged, you’ll see a green light and then all five lights will shine for a few seconds before turning off.

To see these steps in action, watch the following video (English only).

Monitoring battery level

For help deciding when to charge your tracker:

Check your battery level at any time on your Fitbit dashboard.

If your battery is low, when you check your goal progress, you'll see a flashing red light after you check your goal progress.

When your battery is critically low, you won't see your goal progress, only the flashing red light. Charge your tracker as soon as possible.

Charging Instructions

Plug the charging cable into the USB port on your computer or a UL-certified USB wall charger.

Hold the other end of the charging cable near the port on the back of the watch until attaches magnetically.

Make sure the pins on the charging cable lock securely with the port. The connection is secure when the watch vibrates and the battery icon or percentage appears on the screen.

Charging fully takes up to 2 hours. While the watch charges, you can tap the screen or press any button to check the battery level.

To charge your Fitbit One, align the gold contacts on your tracker with the gold contacts on the inside of the charging cable, then plug it into your computer’s USB port. Charging typically takes about an hour.

A battery indicator will appear when the Fitbit One is first plugged into the charging cable. You can hold down the tracker’s button while it is charging to see its current battery level. You can also see your One tracker's battery level at the time of your last sync by clicking on the gear icon in the upper right corner of your dashboard.

When Flyer's battery level falls to Low or Very Low, the LED changes to red and an audio notification plays.

Use the table below to determine the current battery level when Flyer is unplugged.

LED color

Battery status

White light

Medium to fully charged

Red light

Low

Flashing red light

Very low

Charging Instructions

To charge your watch:

Plug the charging cradle into the USB port on your computer or a UL-certified USB wall charger

Pinch the other end of the charging cradle and place Versa in the cradle. The pins on the charging cradle must align with the gold contacts on the back of the watch. The connection is secure when the percent charged appears on screen.

Charging fully takes up to 2 hours. While the watch charges, you can tap the screen to check the battery level.